This is useful advice.
I've played Pikmin 3 and TW101 and these two games are definitely must buys. As for the third game, I would recommend Rayman Legends, if you want to play it now. It is definitely worth the full price, as it is packed with content. But if you don't own NSMBU, it is less likelly this game will be available for cheap any time soon, so... Choices, though choices.
If I may recommend other games that are not on the flyer, Lego City Undercover is a great open world game with tons of collectables. Very funny game, as well. And ZombiU is probably one of the best survival horror game released recently. If you like the genre it is definitely worth a try. Alternatively, there is always MH3U.
RE:R is a nice port. Best RE since the RE4, which is not saying much, but it is a nice game, nonetheless. There is still Most Wanted U. Best version of the game, since they didn't release the DLC for it (how ironical), but I guess you could find it for cheap now.
But, please, do yourself a favour and consider Pikmin3 and TW101.